package main

import "fmt"

/**
	var map1 map[keytype]valuetype
	var map1 map[string]int
 */
func main() {
	s:=map[string]int{"one": 1, "two": 2}
	fmt.Println(s)
	s["aaa"]=12
	s["aaa"]=126
	fmt.Println(s)
	fmt.Println(len(s))
	fmt.Println(s["aaa"])
}
